Just use this room for the time being, and we'll offer you a larger one ________ it becomes available.(2010·安徽)
Many provinces have been hit with smog. If _______ unsolved, the problem may lead to more serious results.
The factory which produced fake wine in our city, _______ was shown in the news report, has been closed by the government.
_______, they had no chance of winning the war.
In order to do something meaningful, it’s necessary that you _______ determine what is really important.
The last four years _______ Gareth Bale transforming from an unwanted player to the most sought-after rising star in world soccer.